This expert group was set up to conduct a study, and the overall objective was to identify the key issues addressed by governments for facilitating the financing of nuclear power plants when nuclear energy was considered a relevant option for policy reasons, such as enhancing security of supply and/or alleviating the risk of global climate change.

The goal of the Ad Hoc Expert Group on Physical Limits to the Development of Nuclear Energy was to analyse and document the physical limits, if any, arising from a possible significant increase in nuclear energy generating capacity.

The EGLTO was formed to assess the key factors from a policy, technical, operational, regulatory and economic perspective necessary to enable long-term operation decisions of nuclear power plants in NEA countries.

The Ad hoc Expert Group on Nuclear Energy and Security of Supply, which had been formed to carry out the study, met for the first time on 22-23 November 2007 at OECD/NEA offices in Issy-les-Moulineaux, France. The 20 experts from member countries and the French research institution Sciences Po who attended the meeting discussed possible qualitative and quantitative approaches to measuring the security of energy supply. 

The NEA Ad hoc Expert Group on Reducing the Costs of Nuclear Power Generation was established in 2018 to evaluate the construction cost reduction opportunities arising at different levels and timeframes.

The Ad hoc Expert Group on the Economics of Long-term Operation of Nuclear Power Plants was responsible for studying the economics of upgrading and long-term operation of nuclear power plants, for further development of nuclear development programs in NEA member countries.

Extending the lifetime of nuclear power plants is becoming common practice in OECD member countries. While applying for an extended operating licence, most operators are planning technical improvements, safety upgrades and modification of fuel characteristics and performance as well as refuelling patterns and lead times.

The objective of the Ad hoc Expert Group was to develop a standardised methodology for assessing the technical and economic case for nuclear cogeneration.

NEA support for countries interested in calculating their system costs and optimising their electricity system

This expert group investigated what are the cogeneration capabilities of various advanced reactor designs, as well as the flexibility they may have to switch from electricity generation to heat production depending on electricity market conditions.

Decommissioning activities are clearly set to increase internationally, giving rise to a sizeable market, growing in business and competition. Meanwhile, ongoing decommissioning work continue at a sustained rate in the numerous legacy sites. It is thus clear that the challenges faced by the industry in relation to decommissioning are significant, spanning technical, political, financial, social and environmental issues, and raising questions over the adequacy of the necessary expertise and infrastructure, as well as the ability to finance the costs.

The Expert Group conducted an appraisal of existing studies and data on the economic costs of severe nuclear accidents that have occurred in civil nuclear energy.